TRIBE LITHOSIINI
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Nishada chilomorpha adunca ssp. n.
Lithosia chilomorpha
Snellen, 1877, Tijdschr. Ent., 20: 67.


Nishada chilomorpha  
(paratype of ssp. adunca)
(x 1.30)


12-14mm, 13-15mm. The species is distinguished from the type species by reduced sexual dimorphism, the females resembling the males, rather than being paler, yellower, with more elongate wings. Both sexes have the margin of the forewing distinctly darker on the underside, though not as pronounced as in the next species. The male antennae have the most basal flagellomeres slightly swollen, there being a gradual taper from the base distally. This subspecies, matched also by the genitalia of males from N.E. Himalaya (slide 5445) and Taiwan (slide 5444), differs from typical chilomorpha (possibly restricted to Java, the type locality) in having a much longer process from the base of the valve costa and a more hooked saccular process.

Holotype . SARAWAK: Gunong Mulu Nat. Park, R.G.S. Exped. 1977-8 (J.D. Holloway et al.), Site 11, February, Camp 1, Mulu, 150m. 385470, mixed dipt. for./river, BM arctiid slide 4704.

Paratypes: 10, 9, general data as holotype but Sites 8, 13, 14, 15, 16, 18, 19, 23, 24, 25.

Geographical range. Sundaland, N.E. Himalaya, Taiwan.

Habitat preference. The species is common in all lowland forest types except heath forest, and is also found less frequently in lower montane forest up to 1000m.

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